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Red Hat Enterprise Linux 8.4 RHSA-2023-3517 Important: Kpatch-Patch DoS

red hat
Calendar Grey June 6, 2023
Dist Redhat Esm H88
New release for kpatch-patch categorized as critical by Red Hat. Insights on vulnerability effects and CVSS rating included.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory DoS kernel patch Red Hat Enterprise Linux important update use-after-free kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2022-42896 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS E4S (v.8.4):
Source: kpatch-patch-4_18_0-305_71_1-1-5.el8_4.src.rpm kpatch-patch-4_18_0-305_72_1-1-4.el8_4.src.rpm kpatch-patch-4_18_0-305_76_1-1-3.el8_4.src.rpm kpatch-patch-4_18_0-305_82_1-1-2.el8_4.src.rpm kpatch-patch-4_18_0-305_86_2-1-1.el8_4.src.rpm kpatch-patch-4_18_0-305_88_1-1-1.el8_4.src.rpm
ppc64le: kpatch-patch-4_18_0-305_71_1-1-5.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_71_1-debuginfo-1-5.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_71_1-debugsource-1-5.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_72_1-1-4.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_72_1-debuginfo-1-4.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_72_1-debugsource-1-4.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_76_1-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_76_1-debuginfo-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_76_1-debugsource-1-3.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_82_1-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_82_1-debuginfo-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_82_1-debugsource-1-2.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_86_2-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_86_2-debuginfo-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_86_2-debugsource-1-1.el8_4.ppc64le.rpm kpatch-patch-4_18_0-305_88_1-1-1.el8_4.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3517-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3517
Issue date: 2023-06-06

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux8.4 Update Services for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory DoS kernel patch Red Hat Enterprise Linux important update use-after-free kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS E4S (v.8.4) - ppc64le, x86_64

Bugs Fixed

2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

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